參數(shù)資料
型號(hào): LA1776M
元件分類: 調(diào)諧器
英文描述: 2-BAND, AUDIO TUNER, PQFP64
封裝: 14 X 14 MM, QFP-64
文件頁數(shù): 22/41頁
文件大?。?/td> 547K
代理商: LA1776M
No.8085-29/41
LA1776M
5-2. AM SD Pin (pin 39) and the AM SD Adjustment Pin
The LA1776M compares V24 and the reference voltage V55 to operate SD and the IF counter.
5-3. AM Wideband Cut and Detection Output Adjustment Methods
The AM/FM detection output (pin 31) has an output impedance of 10 k
in AM mode, and an impedance of a
few tens of ohms in FM mode. Therefore the AM detection output level is lowered by R31 and the AM
wideband frequency characteristics are determined by C31.
55
24
23
39
AM IF
S-meter
100 k
0.47
F
51 k
SEEK
5 V
IF BUFER
IF Buff Amp.
SD
0.022
F
100 k
50 pF
Comparator
50
A
VCC
+
V23DC
V23AC
V39
V55
V24PIN
Larger
values
of R55
Smaller values of R55
5V
Pin 55: AM SD adjustment pin
OFF
IF Buffer ON
SD ON
S-meter
0 V
31
30
FM
detector
AM
detector
VCC
10 k
Noise canceller
input
50 k
R31
C31
+
相關(guān)PDF資料
PDF描述
LA1776M 2-BAND, AUDIO TUNER, PQFP64
LA1780M 2-BAND, AUDIO TUNER, PQFP64
LA1781M AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64
LA1784M AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64
LA1787NM AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LA1776M_09 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Single-Chip Tuner IC for Car Radios
LA1776M-MPB-E 功能描述:調(diào)諧器 RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度:
LA177B/HG-2 制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY
LA177B-1-SRG 制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY
LA177B-HG-2 制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY